31120201121313 has 16 divisors (see below), whose sum is σ = 41640883883456. Its totient is φ = 20673231022080.

The previous prime is 31120201121237. The next prime is 31120201121351. The reversal of 31120201121313 is 31312110202113.

It is not a de Polignac number, because 31120201121313 - 2¹³ = 31120201113121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31120201121313.

It is not an unprimeable number, because it can be changed into a prime (31120201121393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7190608 + ... + 10674513.

It is an arithmetic number, because the mean of its divisors is an integer number (2602555242716).

Almost surely, 2^{31120201121313} is an apocalyptic number.

It is an amenable number.

31120201121313 is a deficient number, since it is larger than the sum of its proper divisors (10520682762143).

31120201121313 is a wasteful number, since it uses less digits than its factorization.

31120201121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17867184.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31120201121313 its reverse (31312110202113), we get a palindrome (62432311323426).

The spelling of 31120201121313 in words is "thirty-one trillion, one hundred twenty billion, two hundred one million, one hundred twenty-one thousand, three hundred thirteen".